VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) VizieR .

VizieR

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B/cfht/obscore Log of CFHT Exposures (CADC, 1979-)
The CFHT Observation logs (original column names in green) (2239798 rows)
  -c=272.163869843001976 -20.409773167363, eq=J2000, rs=0.005
Post annotation about this record
ColumnValue  Explain   (UCD)
_r0.000 arcsec Distance from center (272.163869843001976-20.409773167363)[FK5/J2000] (pos.angDistance)
_RAJ200018 08 39.32876232047 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-20 24 35.1834025072 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195018 05 40.68743579266 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-20 25 06.5176669773 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon009.99703596231000 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-00.24128647594177 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)

obs_publisher_didivo://cadc.nrc.ca/CFHT?790272/790272o  publisher dataset identifier (meta.id;meta.dataset)
obs_collectionCFHT  short name for the data colection (meta.id;meta.dataset)
facility_nameCFHT 3.6m  telescope name (meta.id;instr.tel)
instrument_nameaobir  instrument name (meta.id;instr)
obs_id790272  internal dataset identifier (meta.id;meta.dataset)
dataproduct_typeimage  type of product (meta.note)
calib_level1   calibration level (phot.calib;arith.zp)
obs_release_date 2006-08-31T00:00:00 s timestamp of date the data becomes publicly available (time.epoch)
target_nameSGR1806-20  name of intended target (meta.id)
s_ra272.163869843001976 deg (i) right ascension of central coordinates (J2000) (s_ra) (pos.eq.ra;meta.main)
s_dec-20.409773167363 deg (i) declination of central coordinates (J2000) (s_dec) (pos.eq.dec;meta.main)
s_fov 0.013998818933684   size of the region covered, ∼diameter of minimum bounding circle (instr.fov;instr.pixel)
s_regionPolygon ICRS 272.169150860758 -20.414722417171404 272.1585888247538 -20.41472241686057 272.1585891645594 -20.40482375708737 272.1691505216155 -20.404823757398006  region bounded by observation (obs.field)
s_resolution    typical spatial resolution (pos.angResolution)
s_xel1 1024   dimensions (number of pixels) along one spatial axis (meta.number)
s_xel2 1024   dimensions (number of pixels) along the other spatial axis (meta.number)
t_min53481.4763891 d start time of observation (MJD) (t_min) (time.epoch)
t_max53481.4770835 d end time of observation (MJD) (t_max) (time.epoch)
t_exptime 30.00000000000000 s exposure time of observation (time.expo)
t_resolution 30.00000000000000   typical temporal resolution (time.resolution)
t_xel 2   dimensions (number of pixels) along the time axis (time.scale)
em_min 1.48400000000e-06 m start spectral coordinate value (instr.bandpass)
em_max 1.78000000000e-06 m stop spectral coordinate value (instr.bandpass)
em_res_power 5.51000022888   typical spectral resolution (spect.resolution)
em_xel 1   dimensions (number of pixels) along the energy axis (phys.size)
em_ucd   UCD describing the spectral axis (meta.number)
pol_states   polarization states present in the data (phys.polarization)
pol_xel    dimensions (number of pixels) along the polarization axis (phys.size)
o_ucdphot.count  UCD describing the observable axis (pixel values) (meta.number)
access_urlDatalink  URL to download the data (meta.ref.url)
access_formatapplication/x-votable+xml;content=datalink  format of the data file (meta.note)
access_estsize    estimated size of the download (meta.number)
core_id00000000-0000-0000-2de8-0143dd6362d5  (i) primary key (meta.id.part;meta.main)
lastmodified 2017-12-11T23:22:38 s (i) timestamp of last modification of the metadata UTC (UTC) (lastmodified) (time.epoch)
  
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